362 Proceedings of the Royal Irish Academy. 



Sir J. Herscliel's estimate was 2-95 {Cape Ohs., p. 440). /3 seemed to 

 me nearer 3 m. than 2 m. (ia India), March, 1876. 2-81 H.P. 



376. 24 CojiiE. — 5^ and 6 Lalande ; 7 m. Bessel ; 4-3 in DM; 5 m. 

 Argelander, Heis, and Gould ; and 5-4 at Cordoba. Suspected variable 

 by Gould, although included by him in his " Standards of Magnitude " 

 {V. A. p. 28). June 12, 1877, 1 found 24 very slightly less than 23 

 Comffi ; March 15, 1884, I estimated it 4-9 ; brighter than 11 Comae; 

 April 7, 1884, 4-8— two steps brighter than 23 Comae. 4-98 H.P. 



Xo. 377. DM 17°, 2510 Coiue. — Said to be variable by Weiss, from 

 8-8 to 10 in about 11 months. 



jS^o. 378. 9 Canes Yenatici.— 5-8 Argelander; 6 Heis; 6-23 

 Peirce ; 6-9 DM. Peii'ce says, with reference to this star {Sarvard 

 College Annals, vol. ix. p. 140) : "The magnitude of Argelander and 

 Heis differ very much fi'om that of the DM, and my measures are dis- 

 cordant. But I have excluded the star from the group, not so much 

 on suspicion of variability as because I do not feel sure that I always 

 observed the same star, as there are three near together." Harding 

 only shows one star (9 m.) near the place. December 23, 1878, I 

 found 9 less than 10 — one or two faint stars seen close to it with the 

 binocular. 6-13 H.P. 



ISTo. 379. DM 17°, 2511 Com^.— Said to be variable by Weiss to 

 the extent of one magnitude in a period of about 9^ months. It seems 

 to be Lalande 23645 (8 m). 



IN'o. 380. Lalaitoe 23675-6. — 7 m. and 7|- m. Lalande and 7 m. 

 Harding; 6m Argelander, but seen as 5m by Heis; 5'7 Gould. It 

 is a double star :§ 1669 (6-5, 6-5: 298°-9 : 5"-4). Dr. Gould says: 

 the Cordoba estimates are accordant {JJ. A. p, 318). 5*29 H.P. 



In June, 1875, I found it about 5^m, and brighter than the stars 

 Lalande 23446, and Lalande 23463. 



JS'o. 381. y YiEGEfis. — 3 m. Ptolemy, Sufi and Lalande ; 3-2 Arge- 

 lander; 3-2 Heis; 3*14 Sir J. Herschel (Crt/je. Ohs., p. 440); 3-1 

 Gould ; 3 m. Franks (slightly > 8), April 2, 1878, (^private letter) ; 2-67 

 Pritchard (1882-363). 2*84 H.P. 



March 28, 1876, I found y Virginis =y Corvi (2m Heis). 

 April 5, 1883, y Virginis seemed nearer 2m than 3m. 



It is a celebrated double and binary star, and Struve thought the 

 components alternately variable in brightness, with a possible period 

 of at least several years. Fletcher held the same opinion (Cel Obj., p. 

 412) {Miglish Mechanic, June 15, 1883). 



No. 382. Lalande 23726.— 7im. Lalande; 8 Bessel (1824); 5 

 Heis; 5 Houzeau (1875-13). It is 8 m in Mar din fs Atlas, and is 

 very probably varialDle. Dr. Gould says : " It has never in our obser- 

 vations been found brighter than 6™ 9." 



My observations are : June 7, 1875, 8 m. ; March 1876, 7 or 7im. 



